Organic light-emitting display device

Abstract

The present disclosure relates to an organic light-emitting display device capable of improving the aperture ratio thereof, and the organic light-emitting display device according to the present disclosure includes a plurality of sub-pixels respectively including organic emission layers arranged on a substrate, wherein a sub-pixel in which the organic emission layer is spaced a first vertical distance from the substrate and a sub-pixel in which the organic emission layer is spaced a second vertical distance from the substrate are alternatively arranged, thereby improving the aperture ratio.

The invention claimed is: 
     
       1. An organic light-emitting display device comprising:
 a plurality of pixels, each pixel being composed of a plurality of sub-pixels, each of the sub-pixels including an organic emission layer positioned on a substrate and a planarization layer between the organic emission layer and substrate, 
 wherein the planarization layer is spaced a first vertical distance from the substrate in at least one of the plurality of sub-pixels included in each pixel, 
 wherein the planarization layer is spaced a second vertical distance from the substrate that is shorter than the first vertical distance from the substrate in the another sub-pixel included in each pixel, and 
 wherein the sub-pixel in which the planarization layer is spaced the second vertical distance from the substrate is positioned between sub-pixels in which the planarization layer is spaced the first vertical distance from the substrate. 
 
     
     
       2. The organic light-emitting display device according to  claim 1 , wherein the pixel includes first, second and third sub-pixel, each sub-pixel outputting a different color,
 wherein the first, second and third sub-pixels are separated from one another and arranged in a triangular structure with each sub-pixel positioned at a vertex of the triangle, 
 wherein the planarization layers of the first and third sub-pixels are spaced the first vertical distance from the substrate, and 
 wherein the planarization layer of the second sub-pixel is spaced the second vertical distance shorter than the first vertical distance from the substrate. 
 
     
     
       3. The organic light-emitting display device according to  claim 2 , wherein
 the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel. 
 
     
     
       4. An organic light-emitting display device comprising:
 a plurality of pixels, each pixel being composed of at least a first sub-pixel, a second sub-pixel and a third sub-pixel, each of the first to third sub-pixels including an organic emission layer positioned on a substrate, 
 wherein the organic emission layers of the first and third sub-pixels are spaced a first vertical distance from the substrate in each pixel, 
 wherein the organic emission layer of the second sub-pixel is spaced a second vertical distance from the substrate that is different from the first vertical distance from the substrate in the first sub-pixel, and 
 wherein a planarization layer disposed between the organic emission layer of the second sub-pixel and the substrate is thinner than a planarization layer disposed between the organic emission layer of at least one of the first and third sub-pixels and the substrate. 
 
     
     
       5. The organic light-emitting display device according to  claim 4 , wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is a green sub-pixel, and the third sub-pixel is a blue sub-pixel. 
     
     
       6. The organic light-emitting display device according to  claim 1 , wherein the plurality of sub-pixels included in each pixel is arranged in such a manner that sub-pixels expressing a first color are arranged in one of a horizontal or vertical direction and sub-pixels expressing a second and third color are alternately arranged in the other direction,
 the substrate and the planarization layer are arranged at one of the first and second vertical distances from each other in sub-pixels arranged in odd-numbered sub-pixel columns and odd-numbered sub-pixel rows, and 
 the substrate and the planarization layer are arranged at the other one of the first and second vertical distances from each other in sub-pixels arranged in even-numbered sub-pixel columns and even-numbered sub-pixel rows. 
 
     
     
       7. The organic light-emitting display device according to  claim 6 , wherein a planarization layer of a sub-pixel in which the planarization layer is spaced the second vertical distance from the substrate is thinner than a planarization layer of a sub-pixel in which the planarization layer is spaced the first vertical distance from the substrate. 
     
     
       8. The organic light-emitting display device according to  claim 1 , wherein the sub-pixel in which the planarization layer is spaced the first vertical distance from the substrate and the sub-pixel in which the planarization layer is spaced the second vertical distance from the substrate are positioned in alternating rows. 
     
     
       9. The organic light-emitting display device according to  claim 1 , wherein the sub-pixel in which the planarization layer is spaced the first vertical distance from the substrate and the sub-pixel in which the planarization layer is spaced the second vertical distance from the substrate are positioned in alternating columns. 
     
     
       10. The organic light-emitting display device according to  claim 1 , wherein the sub-pixel in which the planarization layer is spaced the first vertical distance from the substrate and the sub-pixel in which the planarization layer is spaced the second vertical distance from the substrate are positioned on a diagonal with respect to each other within a unit pixel.